Combined sash-lock and ventilator



(No Model.)

' D. D. WART.

COMBINED SASH AND VENTILATOR. No. 546,256. Patented Sept. 10, 1895.

llrvrrnn STATES Arnett rines.

DUNCAN D. STEVART, OF MANISTIQUE, MICHIGAN.

COMBINED SASH-LOCK AND VENTlLATOR.

SPECIFICATION forming part of Letters Patent No. 546,256, datedSeptember 10, 1895. Application filed December 15, 1894. Renewed August9, 1895. Serial No. 558,793. (No model.)

To @ZZ whom t may concerm Be it known that I, DUNCAN D. STEWART, acitizen of the United States, residing at Manisti qu e, in the county ofSchoolcraf t and State of lllichigamhave invented a new and usefulCombined Sash-Lock and Ventilator, of which the following is aspecification.

The invention relates to an improved device whereby the window-sashesmay be locked and prevented from movementwhen so locked, and whereby apassage will be provided for the air to pass through the sash in theventilation of the room; and it has for its object the production ofsuch a device in a way which will be inexpensive and yet effective.

A further object is to make the appliance durable and strong, so that itwill not become out of order.

To these ends the invention consists in certain novel features ofconstruction, combination, and arrangement of parts, as will be morefully described hereinafter and finally embodied in the claims.

In the drawings, Figure 1 represen ts a perspective view of myinvention, showing it applied to a window-sashg Fig. 2, a verticalsection of the same, taken through the windowsash; Fig. 3, a similarsection taken at right angles to the line of Fig. 2; Fig. 4, a detailperspective of the stationary or outer tube; Fig. 5, a similar view ofthe inner or movable tulloe; Fig. 6, a similar view of the regulating`bo t;

The reference-numeral 1 indicates the window-sash, at'dthe side thereof,and 2 the adjacent portion of the window-frame. Formed in theWindow-Sash and extending horizontally therethrough is the passage 3, inwhich the inner or stationary tube 4f is securely yet movably arranged.The tube 4: is formed of metal and has its outer end formed with aiiange 5 thereon, which is arranged to lie in a rabbet-groovc 6 in theouter side of the sash 1, while the adjacent end of the tube is closedand provided with perforations 7, through which the air may pass on itsway in or out of the room, as will be more fully described hereinafter.

Formed in one side of the tube fi, and about midway its length, is thetransverse slot 8, which extends for about one-third the circumferenceof the tube, and which is arranged to communicate with the passage 9,formed in the sash 1' and extending from the side adjacent to the frame2 to the upper side of the main passage 3, with which it intersects, asshown. Located within the passage 9, and filling a part of the spacewithin the length thereofjlis the metallic casing 10, within which thebolt 11 is arranged. The bolt 11 is formed with an enlarged portion 12and with a re.- duced part 13, the latter being surrounded by anexpansive spring le, which gives the bolt a tendency outward, thusthrowing a great portion of the enlarged part 12 out of the passage 9.This extended part of the bolt 11 is adapted to act as the sash-lock,and to this end it is received in one of the openings 15 formed in thewindo\vfratne 2. These openings 15 may be of any suitable number and arelocated at various points, so that the sash 1 may be adjusted alongtheir extent. rlhe inner end of the reduced portion 13 is projectedthrough an opening in the casing 10, and formed with a head 16 thereon,having at its inner side a notch 17 therein, the purpose of which willhereinafter appear.

18 indicates the inner and movable tube, which is fitted snugly withinthe tube 4 and provided at a point near its lower end with a slot 19,matching with the slot 8 and of approximately the same size. This slotis adapted to receive the head 16 of the bolt 11. The tube 1S is capableof rotary movement in the tube 4, and this movement is to be limited bythe head 16, which is received in the slot 19 and which engages the endsof the slot 19 and prevents the tube 18 from moving farther. The purposeof the notch 17 is to receive one end of the slot 19 and bind therewith,thus preventing the tube 18 fromV moving. It will be observed that thebolt 11, when engaged by the tube 18 in the act of moving from left toright, will move therewith until the spring 1li becomes completelycompressed and the shoulder of the bolt prevents further movement. Bythis means the bolt 11 is withdrawn from the opening 15 in which it maybe seated and the window-sash released, so that it may be raised orlowered, while by turning the tube 18 in the opposite direction the bolt11 will be allowed to return, and when completely returned the movementsof the tube will be suppressed.

IOO

Formed in the inner end of the tube 4, which end projects beyond thesash 1,are the circular orifices 20, and these are adapted to registerwith the corresponding orifices 21 of the tube 18, whereby the air isgiven a passage through the perforations of the outer end of the tube 4and thence through these registered orifices. Thus by turning tube 18the passage to the outer atmosphere may be out oft or turned on asdesired. Simultaneously with this operation the bolt 11 may bewithdrawn, as before explained, though the two operations are notnecessarily concurrent, since a much shorter movement of the tube 1Swill close the ventilator-orifices than will operate bolt 11, all ofwhich will be seen from a comparison of the size of slots 19 and 8 andthat of the openings 2O and 2l.

The inner end of the tube 18 is formed integral with a head 22, whichhas attached thereto an operating-ring 23, the purpose of which is toprovide means for turning the tube 1S and for raising or lowering thesash. It will be observed that the bolt 11 hasa twofold function. .Byits means the sash 1 is locked in place and the tube 18 prevented frombeing withdrawn from the tube 4, since the head 1G enters the slot 19 ofsaid tube and prevents the longitudinal movement thereof.

Various changes in the form, proportion, and arrangement of the parts ofmy invention may be resorted to without departing from the substancethereof. Therefore I desire it understood that I am not limited to theprecise construction herein shown, but am entitled to all suchvariations as come Within the above definition.

Having described the invention, I claim- 1. In a combined sash lock andventilator, the combination of a stationary air-conducting tube securedin the Window-sash and eX- tending tbrough the same, a locking-boltextending into the window-frame and into the said tube and capable ofbeing withdrawn from the frame, and a second tube revolubly arrangedwithin the iirst and connected to the locking-bolt, said second tubebeing capable of closing or opening the air passage of the stationarytube, substantially as described.

2. A combined sash-lock and ventilator consisting of a stationary tubeextending through the window-sash and having one end projected beyondthe same and formed with perforations in the sides directly adjacent tothe said end, a casing arranged in a passage in the sash, aspring-actuated bolt therein and projecting into the window-frame andinto the stationary tube at its respective ends, and a second tuberevolubly seated in the stationary tube and having a slot receiving theinner end of the bolt, said slot being arranged to have its ends bindwith and move the bolt, the second tube having formed thereinperorations registering with those of the iirst tube and capable ofbeing moved out of alignment therewith, substantially as described..

3. In a combined sash-lock and ventilator, the combination of astationary air-conducting tube secured within the sash, a springactuatedbolt in the sash and having one end projected into the window-frame andthe remaining end into the interior of the stationary tube, and a secondtube revolubly arranged within the first tube and having a slot thereinreceiving the inner end of the bolt, the said second tube being capableot' closing the air orifices -of the stationary tube, substantially asdescribed.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

DUNCAN D. STEWART.

Vitnesses:

HARRY ASHFORD, JAMES V. STEWART.

